Magneto.



R. C. NLY.

MAGNETO.

y APPLICATION man $56.10. 1915,

IR-BERT G. DANLY, 0F CHICAGO., ILLINOS.

MAGNETO.

Specification of Letters Patent.

Patented Oct. 3, 1916.

Application le February 1G, 1915. Serial No. 7,245.

T 0 @ZZ whom it may concern:

Be it known that l, Roeiinr C. DANLY, a citizen et the United. States, residing at Chicago, in the county of Cook, State of illinois, have Yinvented certain new and useful Improvements in Magnetos, of which the following is a. specification.

My invention relates to electric magnetos for use in connection with internal combustion engines, wherein the charge oi combustible fluid yis ignited by means oi' an electric spark produced at recurring intervals by means of an electric current generated bya magneto deriving motion from a moving part of the engine mechanism, and suitably connected with the ignition mechanism; the object of my invention being to provide a magneto simple in its constrpction and generating an electro-motive force to producev a strong current, substantially proof against the displacement of its parts, and operating positively and eiliciently for the purpose required.

These objects are attained by means of the mechanism illustrated in the accompanying drawings, in whichr Figure 1 is an end elevation, partly in sec tion, of a. magneto having my invention embodied in its construction; Fig. 2 is a side elevation of Fig. l; Fig. 3 is a top plan View of Fig. 1; Fig, is a detached detail of the mechanism. controlling the tripping device; Fig. 5 is an end elevation of a detached part of Fig. 4.; and Fig. 6 is a detail illustrating the manner oi' regulating the operative length et' the reciprocating tripping rod that connects the magneto with the engine mech# anism.

Referring to the drawings, wherein the same reference numerals designate like parts 'throughout the several views, the construction of the magneto, including its case 1, removable cnd wall 2, permanent magnet 3, and' armature shait Li, is substantially the same as that shown and described in my copcnding application for patent filed April 5, 1914, having Serial No. 829,325.

The magneto is secured to a bracket member 5 by means of bolts 6, the bracket being provided with a laterally turned ilange 7 whereby it is secured to the cylinder Wall 8 of an internal combustion engine.

9 represents a common formof fixed elec trode carried by the flange 7 and extending through' the wall 8 into the combustion chamber of the engine, and coperati'ng with the fixed electrode in a manner to control 'the electro-motive force oi the current of electricity generated by the magneto and produce a spark by the well-known way of make and break contact in the o eration of magnetos of the type indicate Electric current is conducted from the magneto to the fixed electrode by means of the insulated conductor 12 connecting the post 13 of the magneto with a loop member 1li secured to the outside end of the iiXed electrode 9.

l5 represents a magneto actuating bar that is given a reciprocatory movement through suitable connections on one end thereof With a moving part of the engine that 4,is properly timed with the rotary moveme` t vof the power shaft and having its oppositie end supported by an eccentrically disposed collar 16 secured to one end of a stem member 17 adapted to rock in bearings carried by the bracket member 5, and having secured to its opposite end a toothed index disk 18 that is yieldingly secured in position by means of a. plate spring member 19 carried by the bracket 5, and 2O represents a hand piece se` cured to the disk whereby it may be conveniently manipulated to turn the stem axially in opposite directions 'as required to raise or lower the bar 15 resting upon the eccentric collar 16, .for the purpose of retarding or advancing the spark resulting from the separation of the contact points of the electrodes, as is well understood by those familiar with the art.

The bar 15 is made Iin two parts as illustrated in Fig. 6, one part having' a threaded portion 21 that is adjustably received by a central opening in the remaining part and 23 represents a securing nut threaded upon the part 21 and engaging With the ad jacent end of the part 22, the associated devices permitting the operative length of the bar to be regulated as conditions may require.'

2i represents a crank armsccured to the armature shaft si, and carrying at its free end a stud 25, upon one end of which is journaled one end of a link 26, having its opposite end slidably received by an opening in an ear member 27, preferably integral with the supportingbracket 5, and 28 represcnts a coiled compres ion spring carried by the link and operative Liet'wcen ilu mr member 2? and a shoulder portion 29 upon the link in a manner to yieldingly resist a rocking movement of the armature shaft i in one direction, and to incline it in an opposite direction through its expansive force when released.

represents a lighter buii'er spring carried by the extended end of the link beyond -the ear 27, and having its force controlled and a shoulder part upon the link in a.

manner to rock the electrode l0 in a direction to cause engagement of the contact points of the movable and iiXed electrodes at proper intervals as governed by the actuating mechanism, and 36 represents an adjustable striker threaded upon the free end of the link and secured in adjusted position by means of a nut 37, and adapted to strike the arm 33 with a hammer stroke and f thereby quickly separate the contact points of the electrodes at governed recurring intervals in the operation of the same.

38 represents a rocking saddle member having depending ear members 39 intermediate its opposite ends spaced apart and receiving between them the reciprocating bar 15, to which they are pivotally connected by means of a pin 40. The saddle member is permitted alimited rocking movement upon the pin a0 by means of a compression spring interposed between one end of the saddle and the bar and operative to rock it in a direction to cause it to engage with the end of the link 2G when the bar l5 is moved in one direction, and to slide under it as the bar moves in an opposite direction, as shown in Fig. l.. The opposite ends of the saddle member are formed alike for the purpose ofpermitting a reversal of its position upon the bai' when one of its ends has become so Worn through use as to impair its effective operation. f

The mechanism as illustrated is designed for use when connected with an internal combustion engine equipped with a charge throttling governor mechanism and wherein the magneto operating bar is given a continuous reciprocatory movement. W'itb the associated parts in assembled relation and the bar 15 properly regulated as to its length to cause the saddle member 38 to engage the link 26 in a manner to oscillate the armature of the magnetoy through a predetermined degree of angular movement,

its movement is directly resisted by the com- 'pression spring 28 encircling the link and incasso disposed in a manner to relieve the armature shaft of any force having a tendencyv to throw it from a true axial oscillation relative tothe pole pieces, as is the result of the action of the opposed tension springs shown in my improved form (F ig. l) above noted.

l believe that il am the first to employ a compression spring for the purpose indicated, land having shown one forni of its adaptation I do not Wish that my invention be confined to the specic details as shown, it being understood that many minor changes may be made in the organization, form and proportion of parts without departing from the spirit of the invention.

Vihat ll claim as my invention, and desire to secure by Letters Patent, is:

l. A; magneto including an oscillating armature, means operative topositively turn said armature through a predetermined degree of angular movement in one direction, a compression spring mechanism operative to return said armature to its initial position, and a buffer springlimiting the reactive force 'of saidl compression spring.

2. A magneto including an oscillating armature carrying shaft, a crank arm secured to said sharm/a link having-onel en'd pivot ally connected with said arm and its opposite end slidably supported, a compression spring carried by said link andoperative to swing said arm in one direction and a bui'fer spring carried by said link and operative in a manner to cushion a reactive force of said compression spring.

3. A magneto including an oscillating armature carrying shaft, a supporting base carrying said magneto, an arm secured to said shaft, a link having one end pivotallyl connected with the free end of said arm and its opposite end slidably carried by said base, and a compression spring carried by said link and reacting between said base. and arm.

l. A magneto including an oscillating armature carrying shaft, a bracketrmember supporting said magneto', an arm secured to said shaft, a link having one end pivotally connected with the free end of said arm and its opposite end slidably received by an opening in said bracket, a compression spring carried by said link and reacting be tween said arm and bracket, and a buli'er spring carried by the free end of said link and operative against said bracket to limit a swinging movement of said arm in onef with said arm and operative tov swing said arm in one direction, and a reciprccatory bar engaging with said link vupon the opposite side of its pivotal axis intermittently and operative to swing said arm in an oppo site direction.

6. A magneto including an oscillating armature carrying shaft, a crank arm secured to said shaft, a link having one end pivotally connected with the free end of said arm and its opposite end slidably supported, a compression spring carried by said link and operative to swing said arm in one direction, a reciprocatory bar, and a rocking saddle member carried by said bar and inF4 termittently engaging with said link to turn 4 said arm in an opposite direction.

7. A magneto including an oscillating y armature carrying shaft, an arm secured to said shaft, a magneto actuating bar, and a reversible rocking saddle member carried by said bar and adapted to engage with said arm.

8. A magneto including an oscillating armature carrying shaft, an arm secured to said shaft, a stud secured to the free end of said arni, a link having one end pivoted upon said stud and its opposite end slidably supported by a iixed part of the structure, a compression spring carried= by said link and operativeto turn said shaft in one direction, a fixed electrode, an oscillating electrode having a lever arm secured thereto, and a second link havingone end slidably 'connected With said lever arm and its opposite .l end pivotally connected with said stud.

Si. A. mi neto including an oscillating armature carrying shaft, an arm secured'to.

said shaft, a stud secured. to the free end of lsaid arm, a link` having one end pivoted upon said stud and its opposite end slidably Supported by a iiXed part of the structure, a compression spring 'carried bysaid link and operative to turn said shaftin one direc. tion, a fixed electrode, an oscillating electrode havinga lever arm'secured thereto, a second link having one e'nd slidably connected withA said lever arm and its opposite end pivotally connected With said stud, and a compression spring carried by said second link and opersaid arm, a link having one end pivoted-l upon said stud and its opposite end slidably supported by a xed part of the structure,

a compression spring carried by said link and operative to turn said shaft in one direction, a iiXed electrode, an oscillating electrode having a lever arm secured thereto, a second link having one end slidably connected With said lever arm and its opposite end pivotally connected Withsaid stud, a compression spring carried by said second link and operative to rocksaid oscillating electrode in a direction to make contact with said fixed electrode, and a striker carried by the free end of said link and adapted to engage with said lever arm.

l1.- A magneto including an oscillating armature carrying shaft, a supporting base carrying said magneto, an arm secured to said shaft, a reciprocatory bar adapted to/jy swing said arm in one direction, and an adjustable eccentrically disposed collar carried by said Lbase and engaging with said bar in a manner to controlthedegree of a swinging movement ofsaidl arm.

I9..v A magneto including an oscillating armature carrying shaft, a supporting base carrying said magneto, an arm secured to said shaft, a reciprocatory bar adapted to swing said arm in one direction, a Stem jcurnaledA in said base, an eccentric collar l secure-d to one end of said stem and supporting said bar, a toothed index disk secured to the vopposite end of said' stem whereby said collarmay be turned 1n a manner to control lthe degree of a swinging movement of said 

